jlab0504a.java

来自「计算机系学习java的专用ppt」· Java 代码 · 共 39 行

abstract class Pet{
   protected String name;
   public Pet(String n){
     name=n;
     }
   public String getName(){
     return name;
     }
   public abstract String move();
   public abstract String speak();
   public String toString(){
     return "My pet"+name;
     }
   }
class Cat extends Pet{
   protected int weight;
   public Cat(String s){
      super(s);
      }
   public String speak(){
      return "miao miao";
     }   
   public String move(){
      return "run";
     }  
    }
  class JLab0504A{
    public static void main(String[] args){
     
      Cat mycat=new Cat("spot");
      
                         
      System.out.println(mycat.toString()+"\n"+"speak:"+
                         mycat.speak()+"\n"+mycat.move()+" "
                         +mycat.getName()+"\n");  
       }
      }